Fangrui Product Details [specific Compatibility]: These Duckbill Valves Are For Elvie Stride Breast Pump, Not Compatible With For Elvie Double/single/for-original Wearable Pump. They Are Also For Momcozy / Tsrete Wearable Pumps Cup / Spectra Caracup. [no-gap, Same Suction Power As Old]: Duckbill Valves Without Gap On Valve Tips Same Suction As Orignal-pump Parts. Silicone Duckbill Valve Designed To Prevent Back-flow Of Breast Milk, Help To Drain Breast Milk To The Bottom Of Container, No Loss Of Suction. [premium Material]: These Pump Parts Are Made Of Food-grade Silicone Material, Durable, No Leaking, Bpa Free, Soft And Odorless, Skin-friendly For Mommy And Baby. [easy To Clean]: Wash Duckbill Valves And Diaphragm For Momcozy M5 After Each Use With Warm Soapy Water And Rinse Well. Please Use Boiling Water/steam, With A Temperature Of Less Than Equal 100(212)for 5-10mins. Hard Brushes Is Not Recommended, Please Use Finger Tips Instead. Colour:green Material:silica Gel Package Contents: 2 x Duckbill Valves Only The A Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-DIMEANI official store